Progress and perspectives of FARICH R&D for the Super Charm-Tau Factory project

• Published in: Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment Accelerators, spectrometers, detectors and associated equipment, 2022-09, Vol.1039, p.167044, Article 167044
• Main Authors: Barnyakov, A. Yu, Barnyakov, M. Yu, Bobrovnikov, V.S., Buzykaev, A.R., Daniluyk, A.F., Düren, M., Hayrapetyan, A., Katcin, A.A., Kayan, H., Kononov, S.A., Kravchenko, E.A., Kuyanov, I.A., Ovtin, I.O., Podgornov, N.A., Pomuleva, S.I., Schmidt, M.A., Shalygin, A.S., Traxler, M.
• Format: Article
• Language: English
• Subjects: Aerogel; PID system; RICH; SiPM
• ISSN: 0168-9002; 1872-9576
• DOI: 10.1016/j.nima.2022.167044

Particle identification system based on Focusing Aerogel RICH (FARICH) detector is considered as an option for the future experiments at the Super Charm-Tau Factory (Russia). We present the progress of FARICH R&D at the Budker Institute of Nuclear Physics. New samples of focusing 4-layer aerogels with maximal refractive index 1.065 were produced in 2020–2021. First beam test results with relativistic electrons demonstrate single photon resolution (SPR) of 9÷10mrad. According to simulation results, the aerogels with such SPR are able to provide μ/π-separation at the level of more than 3 standard deviations for tracks with momentum 1.5 GeV/c. The first version of electronics to readout SiPM arrays based on TDC implemented on FPGA (FPGA-TDC) was developed and manufactured.